Usage patterns
井戸を掘るto dig a well
The villagers dug a well in search of water.
井戸から水を汲むto draw water from a well
My grandmother used to draw water from the well every morning.
井戸が涸れるfor a well to dry up
Sometimes the well dries up in summer.
井戸に落ちるto fall into a well
There was a commotion when a child fell into the well.